Could be any of many factors. How the watch is used, IQ Connect apps (developers will tell you this is impossible, but I proved it to one by both of us testing with and without the IQ app), charging to often before letting the battery nearly drain (the battery will learn what it thinks is a full charge) or a defective watch. I have two friends that got their 945's within a couple of weeks of me (all in May). We pretty much use them the same way. Smart recording, backlight at 10%, and a few IQ apps if any. No issues between the 3 of us. There's 5 people posting with issues. I doubt that's even 1% of units sold. Unfortunately, it's more likely you're unlucky and hopefully you'll be able to get it resolved.

Could be any of many factors. How the watch is used, IQ Connect apps (developers will tell you this is impossible, but I proved it to one by both of us testing with and without the IQ app), charging to often before letting the battery nearly drain (the battery will learn what it thinks is a full charge) or a defective watch. I have two friends that got their 945's within a couple of weeks of me (all in May). We pretty much use them the same way. Smart recording, backlight at 10%, and a few IQ apps if any. No issues between the 3 of us. There's 5 people posting with issues. I doubt that's even 1% of units sold. Unfortunately, it's more likely you're unlucky and hopefully you'll be able to get it resolved.